TRIPHASIC BIOREACTOR AND PROCESS FOR GAS EFFLUENT TREATMENT

摘要

A triphasic bioreactor (1) for physico-chemically treating a gas (10) is disclosed. The triphasic bioreactor comprises a reaction chamber (2) with a liquid (3) and biocatalysts (4) in suspension in the liquid, for catalyzing a reaction between the gas and the liquid to obtain a treated gas and a solution containing a reaction product. A gas bubbling means (8) is provided in the reaction chamber for bubbling the gas to be treated into the liquid, thereby dissolving the gas into the liquid and increasing the pressure inside the reaction chamber. The bioreactor further comprises a liquid inlet (5) in fluid communication with the reaction chamber for receiving the liquid and filling the reaction chamber, a liquid outlet (6) in fluid communication with the reaction chamber for releasing the solution and a gas outlet in fluid communication with the reaction chamber to release the treated gas. The bioreactor further comprises a retention device (9) to retain the biocatalysts in the reaction chamber. The invention also concerns a process using the triphasic bioreactor. The triphasic bioreactor may advantageously be used for removing carbon dioxide from a CO2-containing gas.